Help with spoolgun aluminum welds

[zoama]

Well are you welding with 5356 yet?

I tig welded my boat stringers with 5356. My spool gun has to be sucking air somewhere because I've been through every setting systematically several times with the same results. It can't be the gas since I use the same bottle for tig.
I haven't been out to the shop for a while since my best friend and fishing partner got out of the fence and was run over and killed by some a-hole who didn't bother to stop.